Insulated casing



1,527,679 N. FROST INSULATED CASING Filed June 18. 1924 2 Shoots-Sheet 1J 6' If WITNESSES IN V EN TOR M lbaniel ATTORNEYS N. FROST INSULATEDCASING F b, 24, 'i 925.

Filed June 18, 192.4 2 Sh oecs-Sheet- 2 INVENTOR Ffafl/Q M )6 WITNESSESjVaJ/Jarn'el ATTORNEYS Patented Feb. 24, 19.25.

UNITED STATES earner caries.

NATHANIEL FROST, OF BLOOMINGTON, ILLINGIS, ASSIGNOR- TO AMEBIQANFOUNDRY.

& FURNACE COMPANY, 015 BLOOIVIINGTON, ILLINOIS, A CORPORATION OFILLINOIS.

INSULATED CASING.

Application filed June 18, 1924. Serial No. 720,826.

To all whom it may concern:

Be it known that T, NATHANIEL Fnosr, a citizen of the United States, anda resident of Bloomington, in the county of McLean and State ofIllinois, have invented certain new and useful Improvements in InsulatedCasings, of which the following is a specification.

This invention relates in general to furnaces for heating air to becirculated through rooms in a building and is more particlularlydirected to the type of casing described and claimed in my Patent #1,-394,821.

An object of the invention is the provision of a device for confiningair to be heated which is supplied under pressure and for conserving theheated air and for reducing to a minimum the leakage of the heated airor radiation from said casing.

A further object of the invention is the provision of a casingconstructed of inter fittlng sheet metal pans and asbestos or otherinsulating material made up in panels or sections adapted to be readilybolted together, the sectional construction of the panels providing amore convenient article for handling, shipment and assembly ordisassembly when the necessity arises for re placement or repairs.

This invention will be best understood from a consideration of thefollowing detailed description, in view of the accompany- .ing drawin'gsforming a part of the speciiication; nevertheless it is to'be understoodthat the invention is not confined to the disclosure, being susceptibleof such changes and modifications which shall define no materialdeparture from the salient features of the invention as expressed in theappended claims.

In the drawings:

Figure 1 is a front elevation of my improvement to be installed in thefurnace room of a building.

Figure 2 is aside elevation of the furnace.

Figure 3 is a rear elevation of the same.

Figure 4 is a top plan view of the furnace with parts broken away andpartly in section.

Figure 5 is a vertical section of the casing showing the construction,more particularly of the top of the casing.

Figure 6 is a fragmentary view in section taken through a side of thecasing.

' inserted rivets Filgure 7 is a fragmentary horizontal section showingthe connection between the side and rear panels.

Figure 8 is a fragmentary vertical section of the casing showing thesupports for the top deck. a

Figure 9 is a section through the supports shown in Figure 8. t

Figure 10 is a fragmentary view detailing the joint connection. a

Figure 11 is a view in perspective of the interfitted pans forming apanel.

Referring more particularly to the drawings, l designates the front ofthe furnace which is equipped at its upper end with panels 2 constructedin accordance with the principles of my invention. The rear wall 3 hasspaced panels'2 and intermediate these panels are other panelsespecially constructed to provide openings 5 for the smoke pipes passingthrough the casing.

Each of the panels 2, whether shown in horizontal or vertical position,are composed of a pair of pans 6 and 7 with the pan 6 having less depththan the pan 7 and of slightly less width and length than the same. Thepan 6 is fitted within the pan 7 having its side walls 8 and end walls 9in juXta-position with the respective side walls 10 and end walls 11 ofthe pan 7. The side walls and end walls are provided with a plurality ofalined perforations 12 through which are or bolts 13 for not onlysecuring the side walls and end walls of the interfitted pans together,but for securing the abutting side wall and end wall of adjacent panels,as shown in Figure 10. Interposed between the bottom 14 of pan 6 and thebottom 15 of pan 7 is insulating material 16 which may be formed ofasbestos or any well known substance.

'As shown in Figure 2, aplurality of horizontally disposed panels 2 formthe upper end of a side wall while vertically disposed panels 2 arealined in pairs and form the greater portion of the side wall below thehorizontally disposed panels 2.

The top deck is formed of a plurality of panels 2 which are joinedtogether at their corners as shown in Figure 10 and rest upon beams 17which are secured by means of angle irons 18 brazed or secured in anyapproved manner to the outer face of the bottom of the verticallydisposed panels 2 of the side walls.

lVhere the sides of the outer pans 7 project when formed into eitherside or end walls of the casing, the bolt 13 is passed not only throughperforations in the sides of the pans 6 and 7 but through perforationsin one flange of angle irons 19. The other flange of the angle iron isbrazed or secured in any approved manner to the sides or ends of thepans 7 and brazing, it will be noted, is employed whe; e the angle ironsare located adjacent the insulating material 16.

WVherever expedient or necessary the int-erfitted pans are secured bymeans of bolts 13, as shown in Figures 5 and 6 to the heavy metal plateson the louvre damper section 21.

Pipe flanges 22 are provided to receive the usual pipes or conduits forcarrying the heated air to the rooms to be warmed.

lVhat I claim is:

1. A panel for sectional furnace casings comprising pairs ofinterfittingpan-shaped metal members, a heat insulating filling located between thebottoms of the pan-shaped members, thejuxta-positioned sides of theinterfitting pan-shaped members being provided with alined perforations,and means inserted through the. alined perforations for securing thepan-shaped members together.

2. A sectional furnace casing consisting of a plurality of panelsconnected together, each panel comprising pairs of inter-fittingpan-shaped metal members, a heat insulating filling located between thebottoms of the pan-shaped members, the juxta-positioned sides of theinterfitting pan-shaped members being provided with; alinedperforations, and means for securing the side and end walls of theadjacent panels together.

3. A sectional furnace casing comprising a plurality of panels havingcorresponding end and side walls in abutting relation, each panelcomprising pairs of interfitting pan shapetl metal members, and meansfor securing the abutting side and end walls together.

4. In a sectional furnace casing having side walls, a top deckcomprising a plurality of panels having corresponding end and side wallsin abutting relation, each panel comprising pairs of interfittingpan-shaped metal members, insulating material located between the bottomof the pan-shaped meinbers, means for securing the abutting end and sidewalls of the panels together, a beam in engagement with the bottom ofthe top deck, and angle irons secured to the ends of the beam and theopposed walls of the casing.

5. A panel for the furnace casing comprising a pair of interfittingpan-shaped metal members, the outer pan having a greater depth than theinner pan, and insulating material located between the bottom walls ofthe interfitting pan-shaped members;

NATHANIEL Frost.

